
In the spring of Changshu, Jiangsu, a steel behemoth with a diameter of 16.07 meters—the “Cang Yuan Hao” tunnel boring machine (TBM)—slowly unveiled itself. This national treasure, entirely developed through independent research, is poised to inscribe a new legend along the banks of the Yangtze River. As eyes turn to this record-breaking engineering marvel, one must not overlook the “black gold” coursing through its veins—tungsten. This strategic metal interprets the warmth and resilience of Chinese manufacturing in a distinctive way.…